Yeah, the Nurse CE has a chance of dropping from the Orb/Lotus nodes. I got lucky and had one (and only the one so far) drop early on. Think it was one of the light green colored nodes because it was before I started the realm nodes but based on how the Talisman CE was I assume it's a drop in those too.
xp1337:
Don't you wish there was a spell-checker that told you when you a word out?